Recent content by dphin

Thank you ...so far you're my favorite! Your clues lead me in a direction I can follow!

Thank you, this really helped!

Sorry about that, dumb mistake I didn't square the radius. Circumerence equals 1.22m (C=(2)(pie)(R^2). The accelerations is negative, therefore decreasing. Is it wrong to use theta=s/r? ...

I'm just getting more confused. Ek1 + Ek2 =0 to determine if inelastic or elastic right? I'm unsure of where to go, I'm not getting how to approach the question. We've dealt with inelastic problems, determining whether it is or not in the beginning and using the above equation. However, if...

I feel like I have just been staring at this problem and getting know where... So, would I need to find the distance or acceleration first and then use the work energy theorem??

I'm sorry, but I'm soooo confused! The circumference is 0.25 m, but then what?? I don't get it.

No it doesn't, it just has a diagram. With the bullet being fired into the block from a distance, on a horizontal plane.

Trying to figure this problem... A bullet moves with a speed 5560 cm/s, strikes an 8.45 kg block resting on the table, and bounces straight back with a speed of 1260 cm/s. Find the speed of the block immediately after collision. P before = P after I'm unsure of how to solve without knowing...

Any further help would be great?? Thanks a lot.

Regarding the belt question... I started with theta=r/s, so .44m/29.5m and got 0.015 rev. To answer a. I used the final velocity squared= initial velocity squared + (2) (alpha)(theta) and got an answer of: (1.8 rev/s)squared + (2)(alpha)(0.015 rev) = 108 rev/s squared. for b...

2 questions, that I just can't get and anyone's help would be greatly appreciated... A belt runs on a wheel of radius 44cm. During the time the wheel takes to coast uniformly to rest from an initial speed of 1.8 rev/s, 29.5m of belt length passes over the wheel. Find: (a) the deceleration...